Drawing device

ABSTRACT

A DRAWING DEVICE MADE UP OF TWO SIDE MEMBERS AND TWO END MEMBERS INTEGRALLY CONNECTED TOGETHER FORMING AN OPEN FRAME. THE SIDE MEMBERS EACH HAVE A TRACKWAY SUPPORTED ON THEM WHICH IS APPROXIMATELY HALF THE THICKNESS OF THE SIDE MEMBERS AND THE SAME THICKNESS AS THE END MEMBERS. A SLIDE, WHICH FUNCTIONS AS A T-SQUARE AND IS GENERALLY RECTANGULAR IN CROSS SECTION, HAS ITS ENDS RESTING ON THE TRACKWAYS SO THAT THE SLIDE CAN BE MOVED FROM ONE END TO THE OTHER. THE SLIDE IS PROVIDED WITH A SLOT   ALONG ITS CENTER FROM ONE SIDE TO THE OTHER INTO WHICH THE POINT OF THE PENCIL OF THE DRAFTSMAN CAN BE INSERTED.

Feb. 23, 1971 B. D. FELTENBERGER DRAWING DEVICE Filed June 12, 1969FIG.I

5x005 D. fit-.1 112mg ERGE R United States Patent Office Patented Feb.23, 1971 3,564,719 DRAWING DEVICE ABSTRACT OF THE DISCLOSURE A drawingdevice made up of two side members and two end members integrallyconnected together forming an open frame. The side members each have atrackway supported on them which is approximately half the thickness ofthe side members and the same thickness as the end members. A slide,which functions as a T-square and is generally rectangular in crosssection, has its ends resting on the trackways so that the slide can bemoved from one end to the other. The slide is provided with a slot alongits center from one side to the other into which the point of the pencilof the draftsman can be inserted.

STATEMENT OF INVENTION This invention relates to drawing instrumentsand, more particularly, to a drawing frame suitable to be supported on asupporting surface for drawing lines at right angles to each other.

OBJECTS OF THE INVENTION DESCRIPTION OF THE DRAWINGS FIG. 1 is a topview of the drawing frame shown supported on a clipboard according tothe invention.

FIG. 2 is a longitudinal cross sectional view of the drawing frame takenon line 2-2 of FIG. 1.

DETAILED DESCRIPTION OF THE DRAWINGS Now with more particular referenceto the drawings, the drawing frame shown is generally supported on aclipboard 10. The clipboard has a clip 6 which clamps over the sideframe 12. The drawing frame has side frames 1 and 12 integrallyconnected together by end frames 3 and 4. The side frames have holes 5therein through which pins may be inserted to attach them to theclipboard in case that the clip 6 is not used. The slide 7 has its endssupported on the trackways 8 and 9. The trackways 8 and 9 areapproximately half the thickness of the side frames 1 and 12 and thetrackways support the ends of the slide 7. Slide 7 has a slot 19extending approximately from one side thereof to the other into which apencil may be inserted so that the point of the pencil may be movedlaterally to draw horizontal lines and the pencil may be held againstthe slide to move vertically to draw vertical lines.

The slide 7 can have various template-like openings cut in it to providetemplates to accommodate the particular type of drafting being done bythe draftsman using the frame.

The foregoing specification sets forth the invention in its preferredpractical forms but the structure shown is capable of modificationwithin a range of equivalents without departing from the invention whichis to be understood is broadly novel as is commensurate with theappended claim.

The embodiments of the invention in which an exclusive property orprivilege is claimed are defined as follows:

1. In combination a drawing frame and a clipboard comprising:

a clipboard,

an open frame made up of a first side member and a second side memberand two end members integrally molded together forming an open frame,

said clipboard having a clip engaging said side member clamping saidframe to said clipboard,

said frame being substantially the same size as said clipboard,

a first trackway on said first side member and a second trackway on saidsecond side member,

said trackways being on the side of said side members adjacent eachother,

said trackways being formed by a shoulder on each said side membersubstantially thinner than the other part of said side members,

said end members being substantially the same thickness as saidtrackways, and

a slide member having its ends supported on said trackways and movableover said trackways and said end members,

said slide member has a longitudinal slot extending substantially fromone end thereof to the other and disposed at approximately the center ofsaid slide member, and one of said side members having a scale thereonadjacent the trackway and said slide member having a scale adjacent theslot and edge thereof.

References Cited UNITED STATES PATENTS 382,413 5/1888 Dyer 3380 549,52611/1895 Offenburger 3376 564,840 7/1896 Poole 3380 1,498,485 6/1924Schmidtke 33103 3,262,209 7/ 1966 Saponaro et a1. 3380 FOREIGN PATENTS231,680 2/1911 Germany 33-80 325,258 9/1920 Germany 33108 HARRY N.HAROIAN, Primary Examiner US. Cl. X.R. 33108

